JP3295772B2 - Safety device for electric shutter for construction - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for a building electric shutter for opening and closing an opening of a building.

[0002]

2. Description of the Related Art In general,
Among the safety devices provided in this type of electric shutter for buildings, there are a shutter on the shutter curtain side that opens and closes based on the drive of an electric motor, and a receiver on the shutter body side based on detection of obstacle detection means (such as a seat switch). A transmitter for transmitting an obstacle detection signal is provided to the shutter control unit on the shutter body side, and emergency stop means for automatically stopping the motor drive based on the reception of the obstacle detection signal is provided. There is something. However, because the transmitter is configured to operate on battery power,
When the battery runs out, the emergency stop based on the obstacle detection is not performed. Therefore, on the shutter curtain side, a battery dead signal transmitting means for transmitting a battery dead signal to the transmitter based on the battery voltage of the transmitter being equal to or lower than a predetermined value is provided, and the shutter control unit is provided with a battery dead signal. A device provided with an alarm means for giving an alarm based on reception has been put into practical use. However, in this device, there is a risk that the battery may be completely consumed by continuing the shutter operation without noticing the battery exhaustion alarm. There was.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has been made with the object of providing a safety device for an electric shutter for architectural use which can eliminate these disadvantages. The first invention is a transmitter that transmits a predetermined signal to a receiver on the shutter body side, on a shutter curtain side that opens and closes based on driving of an electric motor, a battery that is a power source of the transmitter, An obstacle detection means for detecting the presence of an obstacle; and an obstacle detection signal transmission means for transmitting an obstacle detection signal to a transmitter based on the obstacle detection by the means. A motor driving means for driving the electric motor based on the operation of the automatic reset type switch, a self-holding means for self-holding the motor driving by the means, and a reception of the obstacle detection signal. In an architectural electric shutter provided with emergency stop means for automatically stopping the motor drive based on the, on the shutter curtain side, the transmitter battery based on the battery voltage of the transmitter is less than or equal to a predetermined value A battery dead signal transmitting unit for transmitting a dead signal is provided, while the shutter control unit is provided with a self-hold release unit for releasing the self-holding unit based on the reception of the dead battery signal, and based on the reception of the dead battery signal. Release self-holding
When the self-return type switch is
A safety device for an electric shutter for architectural use, characterized in that the electric motor is driven when the electric motor is in operation. According to a second aspect of the present invention, there is provided a transmitter that transmits a predetermined signal to a receiver on a shutter body side to a shutter curtain that opens and closes based on driving of an electric motor, and a battery that is a power source of the transmitter. And an obstacle detection means for detecting the presence of an obstacle, and an obstacle detection signal transmitting means for transmitting an obstacle detection signal to a transmitter based on the obstacle detection of the means, while providing a shutter on the shutter body side In the control unit,
Motor driving means for driving the electric motor based on the operation of the automatic reset switch, self-holding means for self-holding the motor drive by the means, self-holding release relay for releasing the self-holding means, and the obstacle An emergency stop means for switching the self-holding release relay when an object detection signal is received and automatically stopping the motor drive is provided. While a battery dead signal transmitting means for transmitting a battery dead signal to the transmitter based on the voltage being equal to or lower than the predetermined value is provided, the shutter control unit switches the self-hold release relay when the battery dead signal is received. Self-holding canceling means for canceling the self-holding means based on the control; and
The self-resetting switch
Drive the electric motor when operating
This is a safety device for an electric shutter for construction, characterized in that the safety device is provided. Further, a third invention is a transmitter that transmits a predetermined signal to a receiver on the shutter body side to a shutter curtain side that opens and closes based on driving of an electric motor, and a battery that is a power source of the transmitter. And an obstacle detection means for detecting the presence of an obstacle, and an obstacle detection signal transmission means for transmitting an obstacle detection signal to a transmitter based on the obstacle detection by the means. The unit includes a motor driving unit that drives the electric motor based on the operation of the automatic return type switch, a self-holding unit that self-holds the motor driving by the unit, and a motor driving unit that receives the obstacle detection signal. In an electric shutter for architectural purposes provided with an emergency stop means for automatically stopping, when the battery voltage of the transmitter exceeds a predetermined value, While the first obstacle detection signal to be transmitted and the second obstacle detection signal to be transmitted when the battery voltage is equal to or less than a predetermined value are set, the shutter control unit receives the second obstacle detection signal. a self-holding release means for releasing said self-retaining means on the basis of, said second disabilities
Self-hold release state based on reception of harmful object detection signal
Is operating the self-resetting switch
And a self-holding and returning means for automatically returning the self-holding means when the first obstacle detection signal is received in the self-holding release state. It is a safety device for electric shutters for construction. According to the present invention, this configuration enables the user to reliably recognize that the battery of the transmitter has run out, thereby greatly contributing to the improvement of the safety of the electric shutter.

[0004]

Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a shutter curtain of an electric shutter for buildings,
Is based on forward / reverse drive control of the electric motor 2 described below.
An opening opening posture wound around the shutter case 3;
The opening and closing state is changed to a closed state of the opening hanging down along the guide rails 4 on both sides of the opening, and these basic configurations are all conventional.

[0005] Reference numeral 5 denotes a shutter opening / closing circuit provided inside the shutter control panel 6, and the shutter opening / closing circuit 5 includes:
A motor drive circuit section 7 in which the contacts of an ascending relay RYU and a descending relay RYD are interposed in parallel in a power supply path from the AC power supply to the electric motor 2, an ascending push button switch (automatic return type a contact switch) PBU, Ascending operation circuit section 8 in which b contact of descending relay RYD, ascending relay RYU and ascending limit switch LSU are connected in series, descending pushbutton switch (automatic return type a contact switch) PBD, ascending relay RYU a lowering operation circuit section 9 in which a contact b, a lowering relay RYD and a lowering limit switch LSD are connected in series;
And a stop operation circuit unit 10 for connecting a stop contact, such as a stop push button switch (automatic return type b-contact switch) PBS, to the descent operation circuit unit 9 in series. Ascending relay R for PBU
The a contact of YU is connected in parallel, while the a contact of the lowering relay RYD is connected in parallel to the lowering push button switch PBD, so that the motor drive based on the switch operation is held by itself.

On the other hand, reference numeral 11 denotes an obstacle detection switch provided at the lower end of the shutter curtain 1. The obstacle detection switch 11 is connected to a case body 11a having a substantially zigzag cross section connected to the shutter curtain 1. A detector 11b having a substantially U-shaped cross section which is immersed based on contact with an obstacle is assembled so as to be able to protrude and retract, and a micro switch (not shown) for detecting the immersion of the detector 11b is connected to a case 11a.
The detection signal of the microswitch is input to a transmitter 12 attached to the back surface of the lower end of the shutter curtain 1.

The transmitter 12 includes a battery 13 as a power supply,
A transmission control unit 14 including a microcomputer or the like,
A signal input circuit 15 for inputting the signal of the obstacle detection switch 11 to the transmission control unit 14, a voltage input circuit 16 for inputting the battery voltage to the transmission control unit 14, and a test signal to the transmission control unit 14. Test switch 1 for
7, a code switch 18 for inputting a code setting signal to the transmission control unit 14, a light emitting diode 19 for transmitting an optical signal based on an output signal of the transmission control unit 14, a light emitting diode 20 for monitoring an operation state, and the like. It is configured. When a signal from the obstacle detection switch 11 or the test switch 17 is input to the transmission control unit 14, the light emitting diode 19 emits light in a predetermined pattern to transmit an obstacle detection signal. However, when the voltage of the battery 13 exceeds a predetermined value, a first pattern of the first obstacle detection signal A is transmitted. On the other hand, when the battery voltage is lower than the predetermined value, a different pattern is used. The second obstacle detection signal B is transmitted.

A light receiving portion 21 is provided at a lower end portion of the shutter case 3. The light receiving portion 21 has a photodiode 22 for receiving an optical signal from the transmitter 12,
Amplifying circuit 2 for amplifying the detection signal of photodiode 22
3, the amplified detection signal is input to a receiver 24 attached to the skeleton side.

The receiver 24 includes a power supply circuit 25 for supplying power, a reception control unit 26 including a microcomputer and the like, and a signal input circuit of a photocoupler insulation type for inputting a signal of the light receiving unit 21 to the reception control unit 26. 27, signal input circuits 28 to 30 for inputting terminal signals B4, L2, L4 of the lowering operation circuit section 9 respectively, and a relay contact RY1 connected in series to the self-holding relay contacts RYU, RYD. 26, a self-hold release relay RY1 that switches based on the output signal of the switch 26,
The relay contact RY2 connected in parallel to the BU
Control relay RY that switches based on the output signal
2. A plurality of light emitting diodes 31 to 31 for displaying various states
34, a buzzer 35 for giving an alarm based on an output signal of the reception control unit 26, a volume 36 for inputting a predetermined adjustment signal to the reception control unit 26, and a code switch for inputting a code setting signal to the reception control unit 26 37 and the like. The procedure of the reception control executed by the reception control unit 26 will be described in detail below with reference to flowcharts.

The reception control unit 26 first determines whether or not a descending operation is being performed based on the input signals of the terminals B4 and L2. If the determination is YES, the light emitting diode 34 is turned on to display a descending state, and the presence or absence of a received signal is determined. Here, when a signal is received, the light emitting diode 31 is turned on to display a reception state, and it is determined whether or not the received signal is the first obstacle detection signal A. And the judgment is YES
, The self-hold release relay RY1 is turned on for a predetermined time to stop the lowering operation, and then the rising control relay R
Y2 is turned on for a predetermined time to avoid pinching of an obstacle, and then the self-hold release relay RY1 is turned on again for a predetermined time.
Then, a series of emergency stop processing of stopping the ascent operation is performed.

On the other hand, when the received signal is the second obstacle detection signal B, the series of emergency stop processing described above is executed, and the buzzer 35 is operated for a predetermined time to issue a battery exhaustion warning. The self-holding release relay RY1 is maintained in the ON state even after the end of the emergency stop process. That is, when the self-hold release relay RY1 is maintained in the ON state, the shutter is operated only during the operation of the push button switches PBU and PBD, which is a so-called monetary operation state. In this state, the emergency stop based on temporary obstacle detection does not function because the battery is surely recognized based on the change of the operation state and the operation is restricted to the position near the shutter (the position where the push button switch is provided) during the operation. Even so, safety can be ensured by requiring users to confirm their own safety.

When a signal is received in a state other than during the descending operation, the signal is determined to be a test signal and the reception state is displayed. This signal is the first obstacle detection signal A. In this case, O is determined based on the second obstacle detection signal B.
Turn OFF the self-hold release relay RY1 held in the N state
It automatically returns to the state.

In the embodiment of the present invention configured as described above, when the voltage of the battery 13 which is the power source of the transmitter 12 drops to a predetermined value or less, the second obstacle detection signal B is output at the time of obstacle detection. Sent. Then, this signal is transmitted to the receiver 2
4 receives the signal, executes a series of emergency stop processing, activates the buzzer 35 for a predetermined time to issue a battery exhaustion alarm, and further maintains the self-hold release relay RY1 in the ON state to release the shutter. The holding operation will be released. In other words, when the battery voltage is reduced to a predetermined value or less, the shutter operation is allowed only during the operation of the push button switches PBU and PBD, so that the shutter operation is allowed. Thus, it is possible to reliably recognize that the battery has run out based on a change in the operation state. Therefore, it is possible to reliably avoid such a disadvantage that the battery is completely consumed by continuing the shutter operation without the user noticing the battery exhaustion warning, as in the related art that only performs the battery exhaustion alarm, As a result,
The safety of the electric shutter can be greatly improved.

In addition, when the montage operation is performed, the user is restrained to the position near the shutter, so that even if the emergency stop based on the provisional obstacle detection does not function, the user is required to confirm the safety by himself / herself. Can be secured.

In addition, self-hold release based on battery exhaustion
Since the existing self-holding release relay RY1 provided for emergency stop is used as it is, there is an advantage that it can be implemented without increasing the number of parts or increasing the cost.

Further, the self-hold release relay RY1, which is held in the ON state based on the second obstacle detection signal,
In order to automatically return to the OFF state based on the reception of the first obstacle detection signal, the normal operation state (self-holding operation state) is only required to turn on the obstacle detection switch 11 or the test switch 17 after battery replacement. There is an advantage that can be returned to.

In the above-described embodiment, the second obstacle detection signal, which serves both as an obstacle detection signal and a battery exhaustion signal, is set and transmitted when an obstacle is detected. It is also possible to set a low battery signal and transmit the signal regardless of obstacle detection, and it goes without saying that the present invention can be implemented in this case as well.

[0018]

In summary, since the present invention is configured as described above, the self-holding drive of the electric motor is automatically stopped when the transmitter operating with the battery as the power source transmits an obstacle detection signal. Even if the battery voltage of the transmitter falls below a predetermined value,
The battery dead signal is transmitted, and the self-holding operation of the shutter is released based on the battery dead signal.
That is, when the battery voltage drops to a predetermined value or less, a so-called monetary operation state in which the shutter operates only during the operation of the automatic return type switch is performed. You will surely recognize it. Therefore, like the one that only issues a low battery alarm,
It is possible to ensure that the user does not notice the dead battery alarm and continue to operate the shutter to completely drain the battery, or if the battery is dead, the user is restrained to the position near the shutter As a result, the user himself can be required to confirm the safety, and as a result, the safety of the electric shutter can be significantly improved.

If self-holding release based on a dead battery signal is performed by using an existing self-holding release relay provided for emergency stop, the number of parts increases and the cost increases. There is an advantage that it can be carried out without.

A first obstacle detection signal is transmitted to the obstacle detection signal transmitting means when the battery voltage of the transmitter exceeds a predetermined value, and is transmitted when the battery voltage is lower than the predetermined value. While setting the second obstacle detection signal, the shutter control unit includes a self-hold release unit that releases the self-hold unit based on the reception of the second obstacle detection signal, and a first obstacle in the self-hold release state. When self-holding and returning means for automatically returning the self-holding means when receiving the object detection signal is provided, the self-holding means released based on the second obstacle detection signal is replaced with the first obstacle It can be automatically restored simply by sending a detection signal, so after replacing the battery, it can be returned to the normal operation state with a simple operation that consciously activates the obstacle detection means. There is.

[Brief description of the drawings]

FIG. 1 is a front view of an electric shutter.

FIG. 2 is a circuit diagram showing a shutter opening / closing circuit.

FIG. 3 is a circuit diagram of a transmitter.

FIG. 4 is a circuit diagram of a light receiving unit.

FIG. 5 is a circuit diagram of a receiver.

FIG. 6 is a flowchart of transmission control.

FIG. 7 is a flowchart of reception control.

FIG. 8 is a timing chart when a first obstacle detection signal is received.

FIG. 9 is a timing chart when a second obstacle detection signal is received.

FIG. 10 is a timing chart when a first obstacle detection signal is received in a self-hold release state.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 shutter curtain 2 electric motor 5 shutter open / close circuit 11 obstacle detection switch 12 transmitter 13 battery 21 light receiving unit 24 receiver RY1 self-hold release relay

Claims (3)

(57) [Claims] A transmitter for transmitting a predetermined signal to a receiver on the shutter body side, a battery serving as a power source of the transmitter, An obstacle detection unit that detects the presence of an object and an obstacle detection signal transmission unit that transmits an obstacle detection signal to a transmitter based on the obstacle detection of the unit are provided. A motor driving means for driving the electric motor based on the operation of the automatic return type switch, a self-holding means for self-holding the motor driving by the means, and automatically driving the motor based on the reception of the obstacle detection signal. In an electric shutter for architectural purposes provided with emergency stop means for stopping at the shutter curtain side, based on the battery voltage of the transmitter being equal to or less than a predetermined value The transmitter has a dead battery signal transmitting means for transmitting a dead battery signal, while the shutter control unit has a self-holding releasing means for releasing the self-holding means based on the reception of the dead battery signal, of
When the self-hold release state is entered based on the reception,
When the self-return switch is operated, the electric motor
A safety device for an electric shutter for architectural purposes, wherein the safety device is driven. 2. A transmitter for transmitting a predetermined signal to a receiver on a shutter body side, a battery serving as a power source of the transmitter, and a battery for transmitting a predetermined signal to a shutter curtain that opens and closes based on driving of an electric motor. An obstacle detection unit that detects the presence of an object and an obstacle detection signal transmission unit that transmits an obstacle detection signal to a transmitter based on the obstacle detection of the unit are provided. A motor driving means for driving the electric motor based on the operation of the automatic return type switch, a self-holding means for self-holding the motor drive by the means, a self-holding release relay for releasing the self-holding means, An electric shutter for construction comprising: emergency stop means for switching the self-hold release relay when the obstacle detection signal is received and automatically stopping the motor drive by switching the self-hold release relay In the shutter curtain, a battery dead signal transmitting means for transmitting a battery dead signal to the transmitter based on the battery voltage of the transmitter being equal to or lower than a predetermined value is provided on the shutter curtain side, while the shutter controller has a battery dead signal. A self-holding canceling means for canceling the self-holding means based on switching control of the self-holding canceling relay when a signal is received;
When the switch is released, operate the self-returning switch.
A safety device for an electric shutter for construction , wherein an electric motor is driven during operation . 3. A transmitter for transmitting a predetermined signal to a receiver on the shutter body side, a battery serving as a power source for the transmitter, and a failure signal to a shutter curtain that opens and closes based on driving of the electric motor. An obstacle detection unit that detects the presence of an object and an obstacle detection signal transmission unit that transmits an obstacle detection signal to a transmitter based on the obstacle detection of the unit are provided. A motor driving means for driving the electric motor based on the operation of the automatic return type switch, a self-holding means for self-holding the motor driving by the means, and automatically driving the motor based on the reception of the obstacle detection signal. And an emergency stop means for stopping the vehicle at a time when the battery voltage of the transmitter exceeds a predetermined value. A first obstacle detection signal to be transmitted, and a second obstacle detection signal to be transmitted when the battery voltage is equal to or lower than a predetermined value. Self-holding canceling means for canceling the self-holding means, and receiving the second obstacle detection signal.
When the self-hold release state is entered based on the
When operating the self-resetting switch, the
And a self-holding return means for automatically returning the self-holding means when the first obstacle detection signal is received in the self-holding release state. Safety equipment.